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  #61  
Old 05-27-2018, 05:44 PM
substance substance is offline
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did anyone try the usb output of the mb100 and successfully get 24/192 output? for me it's always "unknown dac" and won't allow to select anything above 96khz.
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  #62  
Old 01-20-2019, 10:15 AM
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I ended up buying a used autonomic mms-2a and a mms-5a to compare to mb100. Mb100 is definitely based on mms-5a with some minor but important differences.

Minor stuff:
-Mms-5a has an intel board vs. asrock on mb100.
-Mms-5a has a case fan (blower style) connected to the case fan output on the intel motherboard. Mb100ís asrock motherhood also has this case fan controller but Mcintosh didnít include the fan. Note that mms-5a case is significantly smaller than mb100ís.
-mms-5a has both the OS and media on the same 1tb hdd. Mb100 has a separate 32gb kingston ssd for the OS. They have the same OS however Mcintosh one is slightly modified as in Mcintosh OSD and having the media on a separate drive. I believe the OS is windows 7 based.

Big difference that will influence sound.
-mms-5a uses the 7.1 analog outputs of the intel motherboard. These 7.1 are configured into 4 pairs of stereo for 4 zones. Coax output is again from the motherlandís coaxsial tap. This means mms-5a uses the inferior dsp/dac on the low end intel motherland. No power noise isolation or other modifications.

-mb100 has a second daughterboard which has the dac and analog audio section as well as a usb audio to coax converter. It gets its signal from one of the usb headers on the asrock motherboard. Usb power cables are cut on this header so itís only passing data. The daughter board has an isolation transformer on this signal path to further isolate the signal from the noisy motherboard.

The only flaw is the switch mode power supply provided and the 19.5V power is broken down to 12v, 5v and 3.3v on the motherboard before passed to the daughter board.

Also, the new mb50 seems to use the same layout as mb100. Uses a mini itx with a passively cooled cpu. Still runs the same OS, not the new linux based autonomic OS.
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  #63  
Old 02-20-2019, 02:22 PM
jcmc27281 jcmc27281 is offline
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Hello, has anyone replaced the 1TB drive for a 2TB solid state drive? Iím thinking of doing it just wondering if anyone had successfully done it. Thank you
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  #64  
Old 02-20-2019, 07:35 PM
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jcmc27281... Welcome to AA!
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  #65  
Old 01-04-2020, 11:54 PM
substance substance is offline
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Quote:
Originally Posted by jcmc27281 View Post
Hello, has anyone replaced the 1TB drive for a 2TB solid state drive? Iím thinking of doing it just wondering if anyone had successfully done it. Thank you
I replaced it with a 1TB SSD. Works very well. The actual performance increase came from replacing the 30GB Kingston SSD drive with a 128GB Samsung Pro SSD. I have seen one MB100 for sale a couple years ago. It had a 8TB mechanical drive and the seller claimed it worked well. I think 2TB SSD should work fine. Just make sure to clone it because this secondary drive has some script in it.
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  #66  
Old 04-17-2020, 12:29 PM
substance substance is offline
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I made further enhancements to my MB100. I think it is now as good as any streamer.

Previous modifications
- replaced 2gb ram with 2x 8gb low latency ram
- replaced 30gb ssd with 128gb samsung 860 pro
- replaced 1tb hdd with 1tb samsung 860 pro
- replaced intel i3 processor with intel i7 processor.
- replaced stock intel cpu cooler with noctua l9i chromax black (liquid metal thermal compound)

New modifications
- covered all internal surfaces with 5mm sound deadening material.
- Installed electrical noise filters made by sotm for the fan and two sata power sockets
- replaced the power supply with Keces P8 single output.
- replaced the stock Keces P8 DC cable with Audioquest NRG-1.5 DC cable (custom made by Ghent Audio)
- replaced stock ac cable for Keces p8 with Audioquest nrg-z3.
- added sotm snh-10g audiophile switch with upgraded clock and sps-500 dedicated power supply

Now you can hear the fan only if you rest your ear on the unit. Intel i7 didn’t improve the system speed as it was already fast enough with the ssd upgrades.

Last edited by substance; 04-28-2020 at 05:29 PM.
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